How can we overcome our ego and develop a sense of surrender to the divine will?

Bajwaji this article is bit long but please take time to read. This answer your question.LIVING BEYOD SELF (EDITED)
Before I discuss this topic and attempt a better understanding of this subject, let us define a few terms.
BRAIN. A physical soft whitish mass of cells in the human scull, that is the center of nervous system.
MIND. Centre of thoughts, memories, intellect power, and opinions.

CONSCIOUS MIND. Part of mind that observes outside events, all the things you are currently aware of and are thinking about. Awareness of yourself and the world around you presently. Conscious mind is objective or thinking mind. It has no memories and can hold one thought at a time. Conscious mind has two functions. One, identify incoming information through sight, sound, smell, taste, touch and feeling. Second, observe and categorize what is going around. It accepts or rejects data, making choices and decisions. In GURBANI terms SURAT, MATT, MANN, BUDH are used. In my understanding MATT and MANN refer to conscious mind and SURAT and BUDH refer to subconscious mind.
SUBCONSCIOUS MIND. It is the RESERVOIR of feelings, thoughts, beliefs, memories, concepts. We can call it collection of SANSKARS. Main function of subconscious mind is to store and retrieve data. Its job is to ensure that you respond to situations exactly the way you are programmed. Our subconscious mind is subjective. It does not think or reason independently. It merely obeys the commands received from conscious mind. We can use our conscious mind to shape our subconscious mind by overriding it.
These are the products of our own mind.
CONSCIOUSNESS. This is not product of our mind. It is the VOICE OF GOD, DIVINE WISDOM within all of us. The moral compass.

In this context I need to understand who this SELF is. Let me call it I or ME. I believe that I am my body and mind, this is who am I. I experience life through ME. This ME is a separate identity from the SOURCE, GOD WITHIN ME. I live everyday life from ME, self- perspective, not the DIVINE perspective. The ME is conditioned and identified exclusively with material objects, power and status. I am living under the illusion that acquisition of worldly comforts supposedly provides inner happiness. Self is the demanding force that is never satisfied. GURU says HAUMAI DEERAG ROG HAI meaning the ME identification is a chronic disease of mind that causes worries, anxiety, stress, depression, suicides and violence in the society. GURU says this INESS, MENESS is the natural part of the society, we are born into the EGO environment. This is part of the play of life, THE HUKM.
This ME, I is the sum total of the choices I make while growing in the society.
In BANI PEHRE (SGGS PAGE 74) AND MAJH KEE VAR (SGGS PAGE 137), GURU NANAK beautifully explains the phases of life, how as a human I create self- identity, separate from the SATGURU.
GURU says KAHO NANAK PRANNEE PEHLE PEHRE HUKM PIYA GARWAS, meaning you came into this world in the HUKM, DIVINE LAW of the CREATOR. You were a true reflection of the SATGURU with pure consciousness. You were part of the ONE, THE SOURCE OF LIFE.
KAHO NANAK PRANNEE DOOJE PEHRE WISAR GIYA DHIAN. GURU says first you become attached to your mother and father, siblings. Toys and your friends are an attraction of your childhood. You learn the sense mine and yours, the sense of discrimination. You begin to forget who you are, your true self and begin to identify with objects. This is start of individuality and separation from THE CREATOR.
KAHO NANAK PRANNEE TEEJE PEHRE DHAN JOBAN SIO CHIT. GURU says in your adulthood craving for material wealth, power, status become priorities of life. Self-pride of physical appearance and relationships are the drivers of your daily life. Your main focus is centered around external purposes, never looking inward to speak to the CREATOR within. You become captivated by the illusion of finding peace and happiness from material acquisitions. Ideas in your head are all centered around EGO. The inner peace and happiness never arrive.
KAHO NANAK PRANNEE CHAUTHE PEHRE LAWEE LUNIA KHET.
GURU says in your old age then anger, resentment, hopelessness takes control of life. ATHWAI KRODH HOA TAN NASS meaning anger destroys you mentally and physically as well. GURU says you have waisted the most precious gift of God.
BAJH GURU DOOBA SANSAR meaning without realizing the DIVINE WITHIN we all leave this world empty.
This is the story of I, ME. The story of stress, depression, worsening mental health, suicide, wars and destruction. GURU says KARTOOT PASHU KEE MANAS JAAT meaning in behavior we are animals in human skin. GURU says, ME spends a great deal of time and energy dwelling on the past and future, living entire life the way others say. This ME is the biggest obstacle in realizing GOD within and being SACHIARA. Modern society has this myth that temporal intelligence is all we need for success, be able to solve complex problems. GURU says without realizing the DIVINE WISDOM, GODLY VIRTUES WITHIN, temporal intelligence alone does not serve us well. The barometer of true intelligence is an effective inner peace, happiness and bliss. GURU says you make yourself unhappy or happy because of the thoughts in your mind.
BHAGAT KABIRJI says JAB HUM HOTE TAB TU NAHEE AB TUM HO HUM NAHEE (SGGS PAGE 339) meaning this I, ME must disappear before becoming you. I believe it does not matter what meditation method you use, in reality the journey of living beyond self is transformation from egoistic self- perspective of life to GURU, GOD perspective of life.
It is psychological fact that we can train our mind the way we desire. A child grows up to what kind of environment child has been exposed to. Understanding how the conscious mind decipher the information, we are what we feed our subconscious – mind. That is why GURBANI emphasize SANGAT of spiritually awakened. GURU says SAT SANGAT KAISEE JANNIAI JITHAI EKO NAAM WAKHANIAI (SGGS PAGE 72) meaning the true SANGAT is where we contemplate, discourse divine wisdom, godly virtues. Yes, we do need temporal intellect for comforts of life, but inner peace, happiness and bliss only comes from realizing DIVINE WITHIN. KABIR says MOOND LEEYE DARWAJAI (SGGS PAGE 656) meaning with awakened consciousness, divine wisdom I have controlled my sense organs (eyes, ears, tongue) and my thought process. Consciously I can now rationalize what is good, what is bad, what is right and what is wrong. I have let go negative thoughts and feelings. My awakened conscious is totally aware of what enters my subconscious mind. KABIR says WAJILAI ANHAD WAJAI. In this way I have transformed my consciousness and achieved SEHAJ AWASTHA, PEACE, AND BLISS. The negative conditioning that happened while I was unaware has been released and replaced with godly virtues through divine wisdom.